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Re: 400 small block timing help
well my 400 has nothing more than a larger carb and headers and a mechanic i work with said to bump it up to about 6 or 8 degrees (wherever it sounded like it was idling better) now this guy i would trust to do anything on any of my vehicles. but you dont know him so haha you can take my advice or leave it. just thought i would put it out there.
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69 GMC 3/4 ton, 4x4, 400 SB, work in progress
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